The Al2O3 passive film has been successfully coated on the LiNi0.68Co0.10Mn0.22O2 surface via employing the ALD approach. The Al2O3 coated LiNi0.68Co0.10Mn0.22O2 significantly outperforms the uncoated counterpart in terms of cycling stability and rate capability not only under common cut-off voltage of 4.4 V and room temperature but also under sever condition of high temperature (60 °C) or high cut-off voltage 4.8 V. The ameliorated performance is owing to the greatly enhanced interface
机构署名：
本校为其他机构
院系归属：
材料科学与工程学院
摘要：
Although there have been many studies on atomic layer deposition of Al2O3 to improve the electrochemical performances of ternary cathode materials, few studies considered the harsh conditions such as high temperature and high voltage at the same time. In this work, the Al2O3 passivation layer is employed to coat the high nickel (Ni) LiNi0.68Co0.10Mn0.22O2 cathode through atomic layer deposition (ALD) approach. The Al2O3 coated LiNi0.68Co0.10Mn0.22O2 presents superior cycling stability and rate capability than the pristine at the cut-off voltage...
